公开(公告)号：US20140352385A1

公开(公告)日：2014-12-04

申请号：US14463698

申请日：2014-08-20

Applicant: Fuji Oozx Inc.

Inventor： Minoru Noguchi ,  Hiroyuki Tsuchiyama ,  Masami Yasujima

IPC: B21C23/21 ,  B21K1/22

CPC classification number: B21C23/21 ,  B21K1/22 ,  Y10T29/49311

Abstract: A method of producing a hollow valve comprises the step for forming material having a blind hole along its axis, the step for extruding the material in a shaping hole in a die downward and the step for lowering a lower part of a pin to an upper part of a smaller-diameter portion of the shaping hole to allow the material to plastically flow downward through a gap between the lower part of a pin and the smaller-diameter portion of the shaping hole thereby molding a primary intermediate of the hollow valve having a stem and a head at the upper end of the stem through which a hole is formed.

Abstract translation: 一种制造中空阀的方法包括：沿其轴线形成具有盲孔的材料的步骤，用于将材料挤出到模具中的成型孔中的步骤，以及将销的下部部分降低到上部的步骤 的成形孔的较小直径部分，以允许材料通过销的下部与成形孔的较小直径部分之间的间隙塑性地向下流动，从而模制中空阀的初级中间体，其具有杆 以及在杆的上端形成有孔的头部。

公开(公告)号：US09757826B2

公开(公告)日：2017-09-12

申请号：US14785950

申请日：2014-09-02

Applicant: FUJI OOZX INC.

Inventor： Takashi Mishima ,  Hiroyuki Tsuchiyama ,  Satsoshi Narimatsu

IPC: B23P15/00 ,  F01L3/14 ,  F01L3/24 ,  F16K1/36 ,  F16K49/00 ,  B21K1/22 ,  B21C23/00

CPC classification number: B23P15/002 ,  B21C23/002 ,  B21K1/22 ,  F01L3/14 ,  F01L3/24 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2103/01 ,  F01L2820/01 ,  F16K1/36 ,  F16K49/00 ,  Y10T29/49307

Abstract: A method of charging a hollow valve with metallic sodium includes providing a workpiece, as a semi-finished product for a hollow poppet valve, in which a cavity has an upward opening at a free end of a valve stem at a working position; inserting a nozzle into the opening to feed an initial inert gas into the cavity by jetting the inert gas from the nozzle; moving up the nozzle to put a holder between the workpiece and the nozzle, the holder holding a rod-like metallic sodium; and inserting the nozzle into a first end of the holder while an additional inert gas is jetted into the cavity from the nozzle to push down the rod-like metallic sodium along with the inert gas from a second end of the holder into the cavity of the workpiece.